TELEGRAMM Schmal, J. Peter Author: Schmal, J. Peter Recipient: Haeckel, Ernst Corporation: Der Deutsche Freidenkerbund Dating: 16.02.1909
TELEGRAMM Schultze, Leonhard; Schultze, Lulu Author: Schultze, Leonhard; Schultze, Lulu Recipient: Haeckel, Ernst Dating: 16.02.1909
TELEGRAMM Rüdt, Philipp August Johann Leopold Author: Rüdt, Philipp August Johann Leopold Recipient: Haeckel, Ernst Corporation: Münchener Freidenker Dating: 14.02.1909